How can I measure how long a function runs in Matlab?

I have a M开发者_如何学JAVAatlab program that is running longer than I'd like it to. Is there built-in way to profile Matlab, similar to how time works in unix?

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There are three ways:

• Tic/toc
• timeit, a fancier version of tic/toc
• Profiler (Desktop->Profiler in the Matlab Window)

The profiler allows you to see how much time each line takes, and thus, it is the best way to find bottlenecks.